'Defenders of QE need either to argue that these risks have not risen or that the benefits we have received from QE outweigh the rise in risks. To be consistent, those who hold that no additional risks have been incurred must now hold that governments should not have funded in the past and must now stop. But their silence is deafening, and such views are implausible, being held, I think, in the hope of dissuading discussion rather than from any conviction that they would survive much debate.'